comparison DEPENDENCIES/generic/include/boost/geometry/multi/io/wkt/read.hpp @ 16:2665513ce2d3

Add boost headers

+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
+
+// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
+// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP
+#define BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP
+
+#include <string>
+
+#include <boost/geometry/core/mutable_range.hpp>
+#include <boost/geometry/multi/core/tags.hpp>
+#include <boost/geometry/multi/core/point_type.hpp>
+#include <boost/geometry/multi/geometries/concepts/check.hpp>
+#include <boost/geometry/multi/io/wkt/detail/prefix.hpp>
+#include <boost/geometry/io/wkt/read.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace detail { namespace wkt
+{
+
+template <typename MultiGeometry, template<typename> class Parser, typename PrefixPolicy>
+struct multi_parser
+{
+    static inline void apply(std::string const& wkt, MultiGeometry& geometry)
+    {
+        traits::clear<MultiGeometry>::apply(geometry);
+
+        tokenizer tokens(wkt, boost::char_separator<char>(" ", ",()"));
+        tokenizer::iterator it;
+        if (initialize<MultiGeometry>(tokens, PrefixPolicy::apply(), wkt, it))
+        {
+            handle_open_parenthesis(it, tokens.end(), wkt);
+
+            // Parse sub-geometries
+            while(it != tokens.end() && *it != ")")
+            {
+                traits::resize<MultiGeometry>::apply(geometry, boost::size(geometry) + 1);
+                Parser
+                    <
+                        typename boost::range_value<MultiGeometry>::type
+                    >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1));
+                if (it != tokens.end() && *it == ",")
+                {
+                    // Skip "," after multi-element is parsed
+                    ++it;
+                }
+            }
+
+            handle_close_parenthesis(it, tokens.end(), wkt);
+        }
+        
+        check_end(it, tokens.end(), wkt);
+    }
+};
+
+template <typename P>
+struct noparenthesis_point_parser
+{
+    static inline void apply(tokenizer::iterator& it, tokenizer::iterator end,
+        std::string const& wkt, P& point)
+    {
+        parsing_assigner<P, 0, dimension<P>::value>::apply(it, end, point, wkt);
+    }
+};
+
+template <typename MultiGeometry, typename PrefixPolicy>
+struct multi_point_parser
+{
+    static inline void apply(std::string const& wkt, MultiGeometry& geometry)
+    {
+        traits::clear<MultiGeometry>::apply(geometry);
+
+        tokenizer tokens(wkt, boost::char_separator<char>(" ", ",()"));
+        tokenizer::iterator it;
+
+        if (initialize<MultiGeometry>(tokens, PrefixPolicy::apply(), wkt, it))
+        {
+            handle_open_parenthesis(it, tokens.end(), wkt);
+
+            // If first point definition starts with "(" then parse points as (x y)
+            // otherwise as "x y"
+            bool using_brackets = (it != tokens.end() && *it == "(");
+            
+            while(it != tokens.end() && *it != ")")
+            {
+                traits::resize<MultiGeometry>::apply(geometry, boost::size(geometry) + 1);
+                
+                if (using_brackets)
+                {
+                    point_parser
+                        <
+                            typename boost::range_value<MultiGeometry>::type
+                        >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1));
+                }
+                else
+                {
+                    noparenthesis_point_parser
+                        <
+                            typename boost::range_value<MultiGeometry>::type
+                        >::apply(it, tokens.end(), wkt, *(boost::end(geometry) - 1));
+                }
+                    
+                if (it != tokens.end() && *it == ",")
+                {
+                    // Skip "," after point is parsed
+                    ++it;
+                }
+            }
+            
+            handle_close_parenthesis(it, tokens.end(), wkt);
+        }
+        
+        check_end(it, tokens.end(), wkt);
+    }
+};
+
+}} // namespace detail::wkt
+
+#ifndef DOXYGEN_NO_DISPATCH
+namespace dispatch
+{
+
+template <typename MultiGeometry>
+struct read_wkt<multi_point_tag, MultiGeometry>
+    : detail::wkt::multi_point_parser
+            <
+                MultiGeometry,
+                detail::wkt::prefix_multipoint
+            >
+{};
+
+template <typename MultiGeometry>
+struct read_wkt<multi_linestring_tag, MultiGeometry>
+    : detail::wkt::multi_parser
+            <
+                MultiGeometry,
+                detail::wkt::linestring_parser,
+                detail::wkt::prefix_multilinestring
+            >
+{};
+
+template <typename MultiGeometry>
+struct read_wkt<multi_polygon_tag, MultiGeometry>
+    : detail::wkt::multi_parser
+            <
+                MultiGeometry,
+                detail::wkt::polygon_parser,
+                detail::wkt::prefix_multipolygon
+            >
+{};
+
+} // namespace dispatch
+#endif // DOXYGEN_NO_DISPATCH
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_MULTI_IO_WKT_READ_MULTI_HPP